Sound-proof door.



I. HAMLIN.

SOUND PROOF DOOR.

APPLICATION FILED MAB-.4, 1911. 1,005,1 14, Patented Oct. 3, 1911.

IRVING HAMLIN, OF CHICAGO, ILLINOIS.

soUNn-rnoor noon.

Specification of Letters Patent.

Patented Oct. 3, 1911.

2 Application filed March 4, 1911. Serial No. 612,428.

- To all whom it may concern:

iBe it known that I, IRVING HAMLIN, a citizen of the U nited States,residing at Chi cago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Sound-Proof Doors, ofwhich the following is a specification.

My invention relates to doors and similar closing means, and isconcerned particularly with means for rendering such closing meanssoundroof, and also for preventing drafts of air om penetratingtherethrough.

I am aware that doors have previously been constructed in which movablemeans have been used for forming a tight joint between the door and theframe. Such closing means may be effective on a single side of the door,but the difficulty of simultaneously operating closing means for allsides of the door renders such a device inefficient and cumbersome inoperation.

In my improved device I have provided means for simultaneousl operatinga closing member by which a tight joint is formed between the bottom ofthe door and the threshold and at the same time tightly forcing the topand side faces of the door against strips of felt or other suitablematerial mounted. on the door iamb. The mechanism for accomplishing thispurpose is operated entirely by turning the handle of the door, thusgiving the advantage of simplicity of operation while at the same timethe door presents its usual appearance and is not marred by the presenceof disfiguring mechanism. These and other advantages of my inventionwill be more apparent by reference to the accompanying drawings, whichshow a preferred embodiment of my improvements, and in which-- Figure 1is a side elevation of a door and its frame, showing my closingmechanism in position; Fig. 2 is a vertical transverse section on theline 2-2 of Fig. 1; Fig. 3 is an. enlarged fragmentary verticaltransverse section through the metallic box contained in the door frameand in connection with which the door-catch operates; and Fig. 4 is anenlarged fragmentary transverse section through the lower portion of thedoor, showing the movable closing member in position.

The door 10 of my invention may be of any well-known type, but in orderto prevent more efiiciently the cnetration of sound, I prefer to make it1n two parallel portions 11, 11, between which felt or other similarmaterial 12 may be mounted. The lower portion of the door has the recess13, in which the closing member 14 is adapted to reciprocate in avertical plane. The bottom of this closing member 14 has the recess 15,in which felt or other similar material 16 is fastened by means of thescrew. 17. As clearly shown in Figs. 2 and 4, the felt 16 projects infolds below the lower edge of the closing member 14, and when the latteris depressed the felt 16 is adapted to form a tight closure with thethreshold 18.

Near the center of the closingmember 14 IS the transverse rod 19, towhich is connected the link 20. This link, in turn, is suitablyconnected to the lever 21, which is pivoted to the bracket 22 at thepoint 23. Extending from the opposite end of the lever 21' to the arm 24of the cam 25 is the link 26.

The cam 25 is rigidly mounted on the spindle 27, which is provided witha suitable handle 28 preferably in the form of a lever, so that a strongpressure may be exerted with little effort. The cam 25 has an extension29 which forms the door-catch.

.Mounted within the door-frame 30 is the metallic box 31, to the bottomof which is riveted, or otherwise suitably attached, the metal strip 32having the obliquely-disposed portion 33. Between one side of the box 31and the oblique portion 33 of the strip 32 is placed the wedge 34. Thiswedge may be moved in a vertical plane by means of the screw 35, theupper end of which is mounted in the top of the box 31, this screw beingturned by engagement of its rectangular portion 36 with a wrench orother similar tool. The frontof the box 31 is provided with a plate 37,which has suitable openings for the admission of the portion "29 01 thecam 25, and also the wrench, by

means of which the screw 35 is rotated.

As best shown in Fig. 2, the door-jamb 38 on the sides and top of thedoor-frame 30 are provided with strips of felt 39, with which the faceof the door is adapted to form engagement.

Having thus described the construction of the various arts used in .myinvention the operation of the same may now be readily understood.

hen it is desired to open the door, the handle 28, shown in Fig. 1,ismoved in a clockwise direction, thereby elevating the portion 24 of thecam 25 and correspondingly depressing the portion "29 until the lat tter is removed from the plane of the front plate 37. The portion it ofthe vain ii noing raised, the rinsing member l1" issnnr .larly raisedthrough the instrnnnntatitv oi the link 26. the lever :21 and the link320. The felt 16 being thus removed from the threshold 18, the door mayreadily be opened. After the door is closed, on the other hand, thehandle -35 is moved in a notanteneloelcwise dirt-(t ion, thereby t'ilpli S- inn the portion iii of the cam 27 and non responding ly foreing themovable elobmg' member let downwardly, thus bringingthe felt 16 intoclose eontarl with the threshold lb. As the portion 2%} of the cam 2;)is raised it comes in Contact. with th obliquelydisposed nortion 33 ofthe strip 39, and the fare of the door in thus forced imrardly atlainstthe felt strips 53!! on the tlilUt'-jiltlll ii. In this way a tightcontact is formed ln=i\\tt1i the door and the doord'rame on ail sides,and the door is eti'ei-tuallv renden-d soundand draft-proof.

As the felt 16 on the bottom of the movable member L1 is graduallyflattened by use, it; will be apparent that the portion 2i of the "am 25must be unwed farther in a downward direction in order to form a tightelosure on the bottom of the door. At the same time the portion 29 ofthe cam 25 will he moved further upwardly, and in order to provide forthis additional movement the weda'e 34 is raised the desired distance toonah' the oblique portion of the strip :ii? to occupy the properposition,

It will be apparent to those skilled in the art that many changes couldbe made in the detailed eonstriu-tion ot the various parts which I havedescribed without departing: from the spirit or scope of my invention.

'hat I claim is: 1

l. In vomhination with a frame ilit'ltlfillig an aperture, a shutter forsaid aperture, mm aide jointelosing means on said shutter, and manmonmeans for oimultanoously tori ing said shutter into rout-art with saidframe and urinating said movable closing means, substantially asile1-'vliln.("l.

in vomhination with a doord'rame, a door within said frame, movablejoint-elos inn means harried by said door, and (ommon means forinniitaneously fort'ing said door into ('Ulililti with said frame andal'tuating said movable rinsing means, subsiantiallj as des ribed.

23. In combination with a door-franle hav ing a jantb thereon, a doorwithin said frame and adaptedto engage said jamb, movable closing meansbetween said door and said frame, said closing means being carried bysaid door, and common means; for simultaneously forcing said dooragainet said jamb and actuating said movable closing means,substantially as described.

l-. In (aanbinatioa with a dnort'rznno iar ing' a jamb thereon, a doorwithin said t'rauie and adapted to an" in mild jani movable joint-dosingmeans carried on the lmttoltl of said door and adapted to engage thethre hold of said frame, and i-ommon llltttlh t'or sinndtaneousiyforcing said door against said jantb and moving said ulo ing lllttllhinto contaet with said threshold, substantiall as deseribed.

5. In combination with a doord'raim having a. janib thereon, a doorwithin said frame, said. door having a recess in its bottom, movablemeans for closing the joint between the bottom of the door and thethreshold of the frame, and common means for simultaneously actuatingsaid closing means and forcing the door into eontaut with said jamh,substantially as described.

it. In combination with a door-frame ha ving a iamb thereon, a doorwithin said frame, a rotatable spindle in said. door, means for (losingthe joint between the bottom of said door and the threshold of saidframe, a Cam. mounted on leaid spindle, means (onneuiing said ram withsaid mm able closing means, and means for forcing said door into eontaetwith said jalub when said (Sam is rotated, substantially as described.

7. In combination with a door-frame having a jamb thereon, anobliquely-disposed abutment member mounted in said frame, a door withinsaid frame and adapted to engage said jamb, movable means for closingthe joint between the bottom of said door and the threshold of theframe. and common means for simultaneously actuatin; said movableclosing means and formin; engagement with said abutment member, wherebythe door is forced against said jamb and the joint. between the bottomof the door and the-threshold is closed, sub stantially as described.

R. in combination with a door-framehaving a jamb there'on, anobliquely-disposed abutment member mounted in said frame,

means for moving the oblique engaging surfa e of said abutment member, adoor within said frame, a movable closing member harried on the bottomof said door for closing the joint between said door and the thresholdof said frame, a spindle in. said door, a cam mounted on said spindle,and adapted to engage the obliquelyalisposed surfare of said abutmentmember. and meansronneeting said ('am with said cloning member wherebyrotation of said spindle moves said closing member into eontaet withsaid threshold and FOIPQQ the door into tight engagement with said'jamh, substantially as described.

9. in combination with a frame iuctosing an aperture, a shutter for saidaperture, movable joint-elosing means on said shutter, means for f rcingsaid shutter into vontact with said frame, and means connecting saidforcing means with said joint-closing means, substantially as described.

10. In combination with a door frame having a jamb thereon, a doorWithin said frame, means for closing the joint between the bottom ofsaid door and the threshold of said frame, means for forcing said doorinto contact with said jamb, and means connecting said forcing meanswith said 10 joinbclosing means, thereby rendering their operationsimultaneous, substantially as described.

IRVING HAMLIN.

Witnesses: Emv. B. DAVIDSON, AMY AMIDON.

